diff options
Diffstat (limited to 'nix/u-boot/0001-m1n1-fdt-compat.patch')
| -rw-r--r-- | nix/u-boot/0001-m1n1-fdt-compat.patch | 401 |
1 files changed, 0 insertions, 401 deletions
diff --git a/nix/u-boot/0001-m1n1-fdt-compat.patch b/nix/u-boot/0001-m1n1-fdt-compat.patch deleted file mode 100644 index bb58ceb36f02..000000000000 --- a/nix/u-boot/0001-m1n1-fdt-compat.patch +++ /dev/null @@ -1,401 +0,0 @@ -diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig -index e9d5627290..a25b9bc397 100644 ---- a/arch/arm/Kconfig -+++ b/arch/arm/Kconfig -@@ -937,6 +937,7 @@ config ARCH_APPLE - select MISC - select OF_CONTROL - select OF_BOARD -+ select OF_BOARD_SETUP - select PCI - select PINCTRL - select USB -diff --git a/arch/arm/include/asm/arch-apple/m1n1_compat.h b/arch/arm/include/asm/arch-apple/m1n1_compat.h -new file mode 100644 -index 0000000000..27ce468f99 ---- /dev/null -+++ b/arch/arm/include/asm/arch-apple/m1n1_compat.h -@@ -0,0 +1,6 @@ -+// SPDX-License-Identifier: GPL-2.0+ -+/* -+ * (C) Copyright 2021 Thomas Watson <twatson52@icloud.com> -+ */ -+ -+int apple_m1n1_update_fdt(void *, void*); -diff --git a/arch/arm/mach-apple/Makefile b/arch/arm/mach-apple/Makefile -index 52f30a777b..b4008844a0 100644 ---- a/arch/arm/mach-apple/Makefile -+++ b/arch/arm/mach-apple/Makefile -@@ -3,3 +3,4 @@ - obj-y += board.o - obj-y += lowlevel_init.o - obj-y += rtkit.o -+obj-y += m1n1_compat.o -\ No newline at end of file -diff --git a/arch/arm/mach-apple/board.c b/arch/arm/mach-apple/board.c -index b4a7a51dc2..8d2eeb8edb 100644 ---- a/arch/arm/mach-apple/board.c -+++ b/arch/arm/mach-apple/board.c -@@ -11,6 +11,7 @@ - #include <asm/global_data.h> - #include <asm/io.h> - #include <asm/system.h> -+#include <asm/arch-apple/m1n1_compat.h> - - DECLARE_GLOBAL_DATA_PTR; - -@@ -163,3 +164,11 @@ unsigned long get_uart_clk(int dev_index) - { - return 24000000; - } -+ -+int ft_board_setup(void *blob, struct bd_info *bd) -+{ -+ if (apple_m1n1_update_fdt(blob, (void *)fw_dtb_pointer)) -+ return -1; -+ -+ return 0; -+} -diff --git a/arch/arm/mach-apple/m1n1_compat.c b/arch/arm/mach-apple/m1n1_compat.c -new file mode 100644 -index 0000000000..4688e54d6f ---- /dev/null -+++ b/arch/arm/mach-apple/m1n1_compat.c -@@ -0,0 +1,337 @@ -+// SPDX-License-Identifier: GPL-2.0+ -+/* -+ * (C) Copyright 2021 Thomas Watson <twatson52@icloud.com> -+ */ -+ -+#include <common.h> -+#include <fdt_support.h> -+ -+#define problem(...) \ -+ do { \ -+ printf(__VA_ARGS__); \ -+ return -1; \ -+ } while (0) -+ -+static int copy_mem(void *fdt, void *fw_fdt) -+{ -+ int fw_node = fdt_path_offset(fw_fdt, "/memory"); -+ if (fw_node < 0) -+ problem("memory node missing from firmware\n"); -+ -+ int node = fdt_path_offset(fdt, "/memory"); -+ if (node < 0) -+ problem("memory node missing\n"); -+ -+ int len; -+ const void *memreg = fdt_getprop(fw_fdt, fw_node, "reg", &len); -+ if (!memreg) -+ problem("could not get reg property of /memory\n"); -+ -+ if (fdt_setprop(fdt, node, "reg", memreg, len)) -+ problem("could not set reg property of /memory\n"); -+ -+ return 0; -+} -+ -+static int copy_mem_rsv(void *fdt, void *fw_fdt) -+{ -+ int num_rsvs = fdt_num_mem_rsv(fw_fdt); -+ for (int rsv = 0; rsv < num_rsvs; rsv++) -+ { -+ u64 address, size; -+ if (fdt_get_mem_rsv(fw_fdt, rsv, &address, &size)) -+ problem("could not get mem rsv %d\n", rsv); -+ -+ if (fdt_add_mem_rsv(fdt, address, size)) -+ problem("could not add mem rsv %d\n", rsv); -+ } -+ -+ return 0; -+} -+ -+static int copy_rng_seed(void *fdt, void *fw_fdt) -+{ -+ int fw_node = fdt_path_offset(fw_fdt, "/chosen"); -+ if (fw_node < 0) -+ problem("chosen node missing from firmware\n"); -+ -+ int node = fdt_path_offset(fdt, "/chosen"); -+ if (node < 0) -+ problem("chosen node missing\n"); -+ -+ int len; -+ const void *seed = fdt_getprop(fw_fdt, fw_node, "rng-seed", &len); -+ if (!seed) /* might not be present if m1n1 did not get enough entropy */ -+ return 0; -+ -+ if (fdt_setprop(fdt, node, "rng-seed", seed, len)) -+ problem("could not set rng-seed property of /chosen\n"); -+ -+ seed = fdt_getprop(fw_fdt, fw_node, "kaslr-seed", &len); -+ if (!seed) /* might not be present if m1n1 did not get enough entropy */ -+ return 0; -+ -+ if (fdt_setprop(fdt, node, "kaslr-seed", seed, len)) -+ problem("could not set kaslr-seed property of /chosen\n"); -+ -+ return 0; -+} -+ -+static int copy_framebuffer(void *fdt, void *fw_fdt) -+{ -+ int fw_node = fdt_path_offset(fw_fdt, "/chosen/framebuffer"); -+ if (fw_node < 0) /* might not be present if m1n1 did not set it up */ -+ return 0; -+ -+ int node = fdt_path_offset(fdt, "/chosen/framebuffer"); -+ if (node < 0) -+ return 0; -+ -+ const char *name = fdt_get_name(fw_fdt, fw_node, NULL); -+ if (!name) -+ problem("could not get framebuffer name\n"); -+ -+ if (fdt_set_name(fdt, node, name)) -+ problem("could not set framebuffer name\n"); -+ -+ int len; -+ const void *reg = fdt_getprop(fw_fdt, fw_node, "reg", &len); -+ if (!reg) -+ problem("could not get framebuffer reg property\n"); -+ -+ if (fdt_setprop(fdt, node, "reg", reg, len)) -+ problem("could not set framebuffer reg property\n"); -+ -+ const void *width = fdt_getprop(fw_fdt, fw_node, "width", &len); -+ if (!width) -+ problem("could not get framebuffer width property\n"); -+ -+ if (fdt_setprop(fdt, node, "width", width, len)) -+ problem("could not set framebuffer width property\n"); -+ -+ const void *height = fdt_getprop(fw_fdt, fw_node, "height", &len); -+ if (!height) -+ problem("could not get framebuffer height property\n"); -+ -+ if (fdt_setprop(fdt, node, "height", height, len)) -+ problem("could not set framebuffer height property\n"); -+ -+ const void *stride = fdt_getprop(fw_fdt, fw_node, "stride", &len); -+ if (!stride) -+ problem("could not get framebuffer stride property\n"); -+ -+ if (fdt_setprop(fdt, node, "stride", stride, len)) -+ problem("could not set framebuffer stride property\n"); -+ -+ const void *format = fdt_getprop(fw_fdt, fw_node, "format", &len); -+ if (!format) -+ problem("could not get framebuffer format property\n"); -+ -+ if (fdt_setprop(fdt, node, "format", format, len)) -+ problem("could not set framebuffer format property\n"); -+ -+ fdt_delprop(fdt, node, "status"); /* un-disable if disabled */ -+ -+ return 0; -+} -+ -+static int copy_mac_addresses(void *fdt, void *fw_fdt) -+{ -+ int aliases = fdt_path_offset(fdt, "/aliases"); -+ if (aliases < 0) -+ problem("aliases node missing\n"); -+ -+ int property; -+ fdt_for_each_property_offset(property, fdt, aliases) -+ { -+ const char *if_name = (const char *)fdt_getprop_by_offset( -+ fdt, property, NULL, NULL); -+ -+ int node = fdt_path_offset(fdt, if_name); -+ if (!fdt_getprop(fdt, node, "local-mac-address", NULL)) -+ continue; /* probably not a network interface */ -+ -+ int fw_node = fdt_path_offset(fw_fdt, if_name); -+ if (fw_node < 0) -+ problem("corresponding node for %s missing\n", if_name); -+ -+ int len; -+ const void *mac = fdt_getprop(fw_fdt, fw_node, "local-mac-address", &len); -+ if (!mac) -+ problem("could not get local-mac-address of %s\n", if_name); -+ -+ if (fdt_setprop(fdt, node, "local-mac-address", mac, len)) -+ problem("could not set local-mac-address of %s\n", if_name); -+ } -+ -+ return 0; -+} -+ -+static int copy_disabled_status(void *fdt, void *fw_fdt) -+{ -+ const char *soc_path = "/soc/"; -+ int fw_soc_node = fdt_path_offset(fw_fdt, soc_path); -+ if (fw_soc_node < 0) -+ problem("soc node missing from firmware\n"); -+ -+ char dev_path[64]; -+ strcpy(dev_path, soc_path); -+ char *dev_name = dev_path + strlen(soc_path); -+ -+ /* each time we do fdt_setprop, existing offsets could be invalidated, so -+ we need to start over. this turns this function into O(n^3) probably, but -+ there's only a few devices so it should be okay */ -+again: ; -+ -+ int soc_node = fdt_path_offset(fdt, soc_path); -+ if (soc_node < 0) -+ problem("soc node missing\n"); -+ -+ int node; -+ fdt_for_each_subnode(node, fdt, soc_node) -+ { -+ const char *name = fdt_get_name(fdt, node, NULL); -+ if (strncmp(name, "i2c@", 4) && strncmp(name, "usb@", 4)) -+ continue; -+ -+ const char *status = fdt_getprop(fdt, node, "status", NULL); -+ if (status && !strcmp(status, "disabled")) -+ continue; -+ -+ strncpy(dev_name, name, dev_path+64-dev_name); -+ dev_path[63] = '\0'; -+ int fw_node = fdt_path_offset(fw_fdt, dev_path); -+ if (fw_node < 0) -+ problem("corresponding node for %s missing\n", dev_path); -+ -+ const char *fw_status = fdt_getprop(fw_fdt, fw_node, "status", NULL); -+ if (!fw_status || strcmp(fw_status, "disabled")) -+ continue; -+ -+ int iommus_size; -+ const char *iommus = fdt_getprop(fdt, node, "iommus", &iommus_size); -+ if (iommus) { -+ if (iommus_size & 7) -+ problem("invalid iommus size for %s\n", dev_path); -+ -+ for (int i = 0; i < iommus_size/8; i++) { -+ u32 phandle = 0; -+ phandle |= (iommus[i*8 + 0] << 24); -+ phandle |= (iommus[i*8 + 1] << 16); -+ phandle |= (iommus[i*8 + 2] << 8); -+ phandle |= iommus[i*8 + 3]; -+ -+ int io_node; -+ fdt_for_each_subnode(io_node, fdt, soc_node) -+ { -+ if (fdt_get_phandle(fdt, io_node) != phandle) -+ continue; -+ -+ const char *status = fdt_getprop(fdt, io_node, "status", NULL); -+ if (status && !strcmp(status, "disabled")) -+ continue; -+ -+ if (fdt_setprop_string(fdt, io_node, "status", "disabled") < 0) -+ problem("could not disable iommu %u\n", phandle); -+ -+ goto again; -+ } -+ } -+ } -+ -+ if (fdt_setprop_string(fdt, node, "status", "disabled") < 0) -+ problem("could not disable device %s\n", dev_path); -+ -+ goto again; -+ } -+ -+ return 0; -+} -+ -+static int copy_cpu(void *fdt, void *fw_fdt) -+{ -+ const char *cpus_path = "/cpus/"; -+ int fw_cpus_node = fdt_path_offset(fw_fdt, cpus_path); -+ if (fw_cpus_node < 0) -+ problem("cpus node missing from firmware\n"); -+ -+ char cpu_path[64]; -+ strcpy(cpu_path, cpus_path); -+ char *cpu_name = cpu_path + strlen(cpus_path); -+ -+ int cpus_node = fdt_path_offset(fdt, cpus_path); -+ if (cpus_node < 0) -+ problem("cpus node missing\n"); -+ -+ int node; -+ fdt_for_each_subnode(node, fdt, cpus_node) -+ { -+ const char *name = fdt_get_name(fdt, node, NULL); -+ if (strncmp(name, "cpu@", 4)) -+ continue; -+ -+ strncpy(cpu_name, name, cpu_path+64-cpu_name); -+ cpu_path[63] = '\0'; -+ int fw_node = fdt_path_offset(fw_fdt, cpu_path); -+ if (fw_node < 0) -+ problem("corresponding node for %s missing\n", cpu_path); -+ -+ int len; -+ const char *release_addr = fdt_getprop( -+ fw_fdt, fw_node, "cpu-release-addr", &len); -+ if (!release_addr) -+ problem("could not get release addr of %s\n", cpu_path); -+ -+ if (fdt_setprop(fdt, node, "cpu-release-addr", release_addr, len)) -+ problem("could not set release addr of %s\n", cpu_path); -+ } -+ -+ return 0; -+} -+ -+int apple_m1n1_update_fdt(void *fdt, void *fw_fdt) -+{ -+ if (fdt == fw_fdt) -+ return 0; -+ -+ fdt_shrink_to_minimum(fdt, 4096); -+ -+ int problems = 0; -+ if (copy_mem(fdt, fw_fdt)) { -+ printf("Could not copy memory information!\n"); -+ problems = 1; -+ } -+ if (copy_mem_rsv(fdt, fw_fdt)) { -+ printf("Could not copy memory reservation information!\n"); -+ problems = 1; -+ } -+ if (copy_rng_seed(fdt, fw_fdt)) { -+ printf("Could not copy RNG seed information!\n"); -+ problems = 1; -+ } -+ if (copy_framebuffer(fdt, fw_fdt)) { -+ printf("Could not copy framebuffer information!\n"); -+ problems = 1; -+ } -+ if (copy_mac_addresses(fdt, fw_fdt)) { -+ printf("Could not copy MAC address information!\n"); -+ problems = 1; -+ } -+ if (copy_disabled_status(fdt, fw_fdt)) { -+ printf("Could not copy device disabled status information!\n"); -+ problems = 1; -+ } -+ if (copy_cpu(fdt, fw_fdt)) { -+ printf("Could not copy CPU information!\n"); -+ problems = 1; -+ } -+ -+ if (problems) -+ { -+ printf("Something went wrong updating the loaded device tree.\n" -+ "This might be cured by updating U-Boot's device tree, " -+ "or m1n1 itself.\n"); -+ } -+ -+ return 0; -+} |